Brake-mast.



B. D. LOCKWOOD BRAKE MAST.

APPLlCATlON FILED FEB. 12. 1918.

Patented Dec. 3, 1918.

2 SHEETSSHEET l.

mam

BURNS r. LooKwoon, or BELLEVUE, PENNSYLVANIA, .ASSIGNOR T rREssEn-STEEL can COMPANY, OF PITT SBUEGH, IPENNSYLVANIA, A CORPORATION or N w EBsE I 'f BRAKE-MAST.

To all 'wkom'z't may concern.

'Be it known that I, BURNS D. Loorrwoon, a I citizen of the United States, residing in Bellevue, in the county of Allegheny and State of Pennsylvania, have invented certain newlan'd useful 1 Improvements 1n Brake- Masts, of which the following 1s aspeclf cation.

This inventionrelates to improvements in brake masts for trucks of a type which are being used in militar operations and has as an object the simpli cation, and the reduction to a. minimum ofthe number, of parts forming the brake mastg,

Another object of the'inventionis to provide a brake mast-which maybe manually operated from the railroad track and from I the fioor of the truck to which it is applied.

A further object'of the invention is to pro vide a brake .mast having a removable upper section and a fixed lower section each of said sections. having independent means whereby the mastmay be operated.

A still further object of the invention is to provide a novel gravity pawl for holding the brake mast ,"against accidental reverse rotation. z j I These and other objects will be apparent from the following description: f

Referring to the drawings in which like reference characters refer to like parts,

. Figure 1 is a side elevationa'lview. of a truck showing the brake'mast applied thereto; Fig. 2 isfan enlargedplan view of the brake mast anda portion of. the truck; Fig. 3 is a s de elevational view of. the same; Fig; 4" is an enlarged end elevational view of thesame,

and F ig."5 is a sectional view-taken on. the

line -5- 5 of Fig.2.

Referring now in detail to the drawings, 1 indicates the truck which preferably comprises side frames 2 whichare connected together at their ends by end SlllS 3 and 4. The floor or top of the truckmay comprise plates 5 and 6 which may be suitably secured to the side frames and to the end sills 3 and 4 respectively and may: also comprise a plate 7 which may be secured to the side frames. The endsilll is preferably of cast metal and is" provided with brackets 8 and 9 which pro- Specification' of Letters Patent.

ratchet wheel 25 which is secured jectoutwardlybeyond the front'face of the V 13 and 14: which Patented Dec.-3,"1918.' Application filed February 12,1913. Serial No. 216,822.

s1ll-,'which brackets have openings l0and'l1 This end sill is which preferably comprises'upper and-lower? operatively connected sections 20 and2l respectively, the upper. section 20 being provided with-a hand wheel-22 by means "of which the brake mast may be rotated: The lower'section 21 is preferably square incross section for its full length and at its lower end is providedwith a gear wheel 23 which is secured theretoby a cotter pin or any other" suitablemean's. This gear'wheel is provided with a portion 24 which, when the mast is in its proper position,'extends intothe opening llformed inthe bracket 9 and forms a journal for the lower end portion of thelsection 21. The section 21 is also provided with a I thereto by a rivet or other suitablemeans. This ratchet tion 27 extends above the toothed portion 26 and upper and lower annular portions 27 and 28 respectively. When the-brakemast'is in its proper position the lower'portion 28 of the ratchet wheel extends into the opening 10 formed in the bracket 8 andv forms an- I other journal for the section 21. The portion 27 extends above the toothed portion 26 and has its outer surface 29 beveled upwardly, z. e., has its diametergradually decreased toward its top.

' To lock the brake mast against accidental reverse rotation a pawl 30 is'provided which is pivotally connected with the bracket 8 through medium of lugs 31 which are preferablyintegral with the bracket, and'a pin 32 which 31. This pawl is providedwith a horizontal portion 33 which preferably surrounds the upper-portion 27 of the ratchet wheel and is provided witha'tooth' 34 which is adapted to engage the teeth of the'ratchet wheel. The pawl-is also provided'with an upwardly ex asses through the pawl and the lugs tooth' 34 out of engagement radially of the;; ratchet-wheel.' When the pawl is operated the horizontal portion 33 will'move on the pin 32andtheupper portion,

277 f the. ratchet wheel being beveled will permit such movement without any binding action therebetween, thus insuring the free operation of the pawl and the brake mast. The horizontal portion 33 of the pawl is of ratchet wheel until such time as the pawliis t e f Intermediate the brackets 8 and 9 of the end sill,'the section 21 of the shaft 19 ispro'e vided with 'aftoothed wheel 36 which is pro-- vided with a sleeve portion 37 upon which a hand lever 38 is mounted. This hand lever comprises a. yoke 39 which is rotatably mounted' on the sleeve portion 37 or the movement by toothed wheel .and is held against vertical v its engagement with .-.the bracket 8. of the end sill and with a shoulder 40 formed on 'thei toothed wheel '36, which toothed when 36 is held against vertical movement by bracket 9,oit,the end sill at one end and vwith the lower portion of the ratchet wheel z'This lever alsocomprises a hand portion llwhich is pivotally connected with the yoke '39 and at its lnner end is provided With'a tooth 42, which when the levervisin aohorizontal or operable position is adapted to engage the teeth of the wheel 36 and which when ,thelever is in inoperative posi tion as shown in the drawings, will be out o'f engagement with, the teeth of The chain winderv 18comprises a vertically disposed member 4.3v which is provided witha portion fleupon which the brake chain/i5 isadapted to bewound' and is also provided withia; portion 46 which is ,prefen ably'square in cross section To thisportion 46 of the winder, a gear wheel 47 is secured,

which gear wheel has a portionAS which extendsupwardly within the opening. 17 formed in the bracket 14 and forms a journal for the lowerportion of the winder. .The

teeth of ma es wheel {lT-meshwiththe teaser the gear wheel 23 on the section 21 of the .brakeshaft, so that-any rotation of the brake. mast; winder. It will here be vnoted that these gear wheels are, so proportioned'that they form a power increasing device. The vwinder is provided with an enlarged head portion 4&9 "which, engages the bracket 13 of the end sill, andthus preyents vertical movement of the winder in one-direction, movement of its engagement with the.

the. wheel '36.

will be transmitted 'to the the winder in the opposite direction being I prevented by the engagement of the gear wheel 47 with the underside of the brackmechanism shown in the drawings being substantially the same as that described and claimed in my pending application for UnitedStates Letters greater weight than the portion 35. and will. by gravity thus automatically keep theotooth 34-. in engagement with the teeth of the operated by the operator to release brakes.

Patent, filed Oc tober 4, 1917, for truck and serially numbered Having thus described the invention,what

I claim as new and desire to secureby Let mast comprising a plurality-ofconnected mounted on saidtruck, said rotatable sections, one of said sections being fixed to saidtruck and the other being removable from the first mentioned section,

and each of said sections having means independent of the otherior rotating said N mast. p r

2. The combination with a truck, of a brake mast mountedon said truclnsaid mast comprising a rotatable, shaft having a fiXed lower sectionand a removable upper section and each one of said; sections having means independent of theotherffor rotating saidmast, v

3. The combination 'witha trucklofi an end sill forming part of said truck, brackets projectingj fromsaid sill, and, a brake .mastlrot'atably mounted in" said brackets,.said brake mast. comprising a shaft substantially square in cross .sectionfor. a portion of its-length,

a ratchet. wheel se'cured to the square portion of said shaft, said ratchet wheel havingan annular portion adapted to extend into one of saidbrackets to form ajournal for the brake mast, and, a gear wheel secured to the square portion of said shaft, said gear wheel having an annular portion adapted toj-exte'nd into the other of said brackets to i 1 form another journal for said mast.

4. The combinationwith a truck, of an end sill forming part of said truck,brackets projecting from said sill, a brake mast comprising upper and lower sectloiisgthe'lower section being ournaled in said brackets and theupper sectionv being removable from said lower section, and a lever mounted 'on said lower section for rotating said mast,

5,. The combination with a truck ,lof an end sill formingpart of said truck, brackets projecting from said sill, a' brake' mast com-- prisingupper and lower sections, the lower section being ournaled in said brackets and the upper sectionbe ngremovable from said lower sect1on,and a lever mounted on said lower section for rotating said mast;

' said lever comprising i a toothed wheel In testimony whereof I affix my signature nflountedhon said lower section and rotatable in the presence of two witnesses. t erewit a yoke rotatably mounted on said 7 v Wheel, add a member pivotally connected BU LOCKWOOD' '5 with said yoke and adapted to be raised or Witnesses:

lowered into or out of engagement With said FRANK E. MILLER,

" toothed wheeL' 1 A.C. IELDS, Jr.

' Copies of this patent may be obtained for five cents each, by addressing the Gommissionei' oi l'atents, V Washington',D.0;" i

Itis hereby certified that in Letters Patent N 0. 1,286,678, granted December 3, 1918, upon the application of Burns D. Lockwood, of Bellevue, Pennsylvania, for an improvement in Brake-Masts, an error appears in the printed specification requiring correction as follows: Page 1,,line 78, strike out the syllable and Words tion 27 extends above the and insert the Words wheel is provided with a; and that the said Letters Patent should be read, With this correction therein that the same may conform to the record of the case in the Patent Office. I

Signed and sealed this 23d day of December, A. D., 1919.

[SEAL] M. H.- OOULSTON,

Acting Commissioner of Patents.

Correction in Letters Patent No. 1,286,678L

Cl. 188-56. r 

